无线电工程
無線電工程
무선전공정
RADIO ENGINEERING OF CHINA
2014年
11期
15-18,58
,共5页
张波%童力%周凌云%陈畅
張波%童力%週凌雲%陳暢
장파%동력%주릉운%진창
l∞-LMS%SPNLMS算法%l∞-SPNLMS%收敛速度%低计算量
l∞-LMS%SPNLMS算法%l∞-SPNLMS%收斂速度%低計算量
l∞-LMS%SPNLMS산법%l∞-SPNLMS%수렴속도%저계산량
l∞-LMS%SPNLMS algorithm%l∞-SPNLMS algorithm%rate of convergence%low calculation amount
应用于长阶数稀疏冲激响应自适应滤波器中的SPNLMS算法，在每次迭代中对每一个滤波器系数更新需要进行一次乘法的运算量是不能忽视的。结合l∞-LMS算法与SPNLMS算法提出的l∞-SPNLMS算法克服了这一缺点，减少了计算量，在硬件实现中节省了计算时间﹑硬件资源以及功耗。理论分析与数值仿真表明， l∞-SPNLMS算法在前期收敛过程可以得到快速前期收敛速度，同时还兼容收敛精度和低计算量。
應用于長階數稀疏遲激響應自適應濾波器中的SPNLMS算法，在每次迭代中對每一箇濾波器繫數更新需要進行一次乘法的運算量是不能忽視的。結閤l∞-LMS算法與SPNLMS算法提齣的l∞-SPNLMS算法剋服瞭這一缺點，減少瞭計算量，在硬件實現中節省瞭計算時間﹑硬件資源以及功耗。理論分析與數值倣真錶明， l∞-SPNLMS算法在前期收斂過程可以得到快速前期收斂速度，同時還兼容收斂精度和低計算量。
응용우장계수희소충격향응자괄응려파기중적SPNLMS산법，재매차질대중대매일개려파기계수경신수요진행일차승법적운산량시불능홀시적。결합l∞-LMS산법여SPNLMS산법제출적l∞-SPNLMS산법극복료저일결점，감소료계산량，재경건실현중절성료계산시간﹑경건자원이급공모。이론분석여수치방진표명， l∞-SPNLMS산법재전기수렴과정가이득도쾌속전기수렴속도，동시환겸용수렴정도화저계산량。
The SPNLMS algorithm used by sparse impulse response adaptive filter with a long order has a multiplication operation between every coefficient of the filter and its scale factor,which products a non-negligible amount of calculation.The shortcoming can be overcome by the l∞-SPNLMS algorithm proposed by combing l∞-LMS algorithm and SPNLMS algorithm. By reducing the amount of calculation,the l∞-LMS algorithm can save computing time,hardware resource and power consumption in project realization.The theoret-ical analysis and numerical simulation demonstrate that the l∞-SPNLMS algorithm has the characteristic of a fast convergence rate with sufficient convergence precision and a small amount of calculation in the early process of convergence.
